Improved shaking and rocking table for amalgamating gold



the same.

in such amanner as to form furrowswith prolence being had to the annexeddrawings, niak- UNITED STATES Aiioiirii nuria Asn wiLLiAiiJixMEsWA1iD,oF BLA-ori u; wit, oov aan PAT-ENT OFFICE.

- iMPRovED sHAKiNc AND RocKiNG TABLE FOR AM'ALc-,AMATINGsquirt. 1 i i tspecificationraming.psrweLeaersemuc-ia 413:84', cated Ali ,i 'ff To @ZZwhom .it may concern: i i Be it known that we, ADOLPH BEER and WILLIAMJAMES YHRD, of Black Hawk, in 4the county of Gilpin, and the Territoryof Colorado, have invented a new and improvedi shaking or rocking tablefor-the amalgamationand extraction of gold and silver from' ores,minerals, and substances containing those metals; and we do herebydeclare that the following is a full and exact descripfionof The nature,ofl our invention consists in an .amalgainated sheet of copper orbrass, bent jectingrbs, and scrcwedfon tight to wooden sides, which arecarved Y out in the desired shape. The end of theI copper or brassopposite-ithe ribs is bent over to forni halt' of a circle, while theother end is secured to a series of wooden grooves or gutters. 'l`hetable thus i'ormed is suspended by iron .rods on` a level, and set inmotion by means of an eccentric, to which the/table is connected,

`To enable lothers'sklled in the art to make and use our` invention, wewill proceed to del' sci-ibo its construction and operation, refer ing apart of -this specification, in which- Figure l` ifsl a perspectiveview; Fig. 2, a top view; Fig. 3.a side view, and Fig. 4"an e'ndf view.

Tivo planks, A, Fig. 1, of pine or other wood, fourteen to iii'teeni'eetlong, eight or nine inches wide, and ,two inches thick, are roundedei'lffon one of their ends to half of a circle, a, uid curved out onone'oi' their edges -iii 4the shape as shown. by G, Figs. land3,'the'deepest cuts being twelve inches apart, and placed on a sheet ofcopperior brass, B, five feet wide and twelve ieet long, the eiidc ofwhich is bent over and screwed tight to the round (d ends a,"while' theedges vare fitted and screwed closely to the curved edges of the planks.The shape of the curves is thus coininunicated to the sheet and is madeto extend across its whole wir i, thus forming grooves or riiilcs withprojecting ribs, which have a height of one and oiiclialf ineh'` Theother end, d, oi" theicopperfor brass is connected with threeor morewooden grooves oi' gutters, c, which are one. 'foot infwidtli, lio

planks'Ar These `,wooden gro llowcd `out t to colleetan y Quicksilverwhich may be forced over by too heavy a feedot" ore, &c`. "lliejtab thusformed is suspended Yby the iron rods f, which are swinging ineyeboltsiastenedtotlie frame-workGl. y l v1 n' il g. is 'a plankboltedltoftlie sidesqA of the table, audfconuected with the eccentricIv,Fi 4, which has about a three-inch throw, set iu motion by thelpulley i," makin hundred and twentyrevolutions in am The upper side ofthecopp'er or brass with 'a solution of concentrated lye to rein ver`all grease, and'by ineansof a solution of cya idc of potassium oraiiiinoniuui `zinc chlorid quicksilver is evenly rubbed out ongit t l thcopper orbrass presentsa bright surface. Thefirst copper orbrfa `.roovesare charged witliliquiilqui frouttentotwentpounds are siiili` `en tablesetl iuiinotion,and the powde d sub stances containing `gold or silveraresluieed into the irirst copper or brassrile by a. inod 4ate stream ofwater, ive-eightlis of aninch` ing sufiicient. From this iirstriie intothe second, third,l'and fsoon; and silver coming in contact wi matedcopper or brass jwill adhere to i taken `upby the liquid,quicksilvenwhinert substan ces are carriedaway by the wat When suflicieiit ainalg misicollectethit is, connection nwith the liquid qiiicks-ilver, taken offthe ritiies and cleaned, separatedas `usiit The advantages of` ouriuyentiongare as follows: First, a large quantity of `substancecontaining gold or silver can be thus treated as the apparatuscan" beworkedcontinousl at the saine time 'requiring but verylittle motivepower;' second, by the peculiar shape of the copper or brasslriies thegold-bearing substances suspended in the water-not only are subjected toa sifting` motion, but arealso, by the splash produced bytheprojectingribs thrown and forced incol with the, amai mated copper orbrasse liquid quick -which constantly renew the surf b in motion;third,"no Quicksilver, 3 p quently no amalgam, can-be lost, as, flq'usilver should be forced-over by any cai se, wooden grooves will collect`it and sa they having the greatest depthin the c` te in thecenterto'the depth of'oiicla l 1li of an inch, vand fitted iiitightbetii en where the least niotionis, the quiclsilver its higherspecific gr'ivliv, goes to `the und stays .therc; fourth, it oiers :Llarge amalg'ainating-surtace, more so as everypzirtic'e vintroducedtherein is thrown to and fro again 4and again before it can leave thetable; fifth, it is cheapin its construction und durable.

f Wlat we claim as our invention, and desir( t0 secure by LettersPatent, is-

A shaking' or rocking table with amalgaf.

"mated copper or' brass ritiles or grooves, which mix-y be charged withmore or less additional Quicksilver, alone or in connection with one ormore Wooden rifiles or grooves, lin the shape and manner abovedescribed, or4 constructed in any manner substantially the same, whichwill impart to substanc esfsuspcnderbin WaterAV

